PT-2025-7535 · Cisco · Cisco Secure Email Gateway

Published 2025-02-19 · Updated 2025-07-31 · CVE-2025-20153

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Cisco Secure Email Gateway (affected versions not specified)

Description A vulnerability in the email filtering mechanism of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to bypass the configured rules and allow emails that should have been denied to flow through an affected device. This vulnerability is due to improper handling of email that passes through an affected device. An attacker could exploit this vulnerability by sending a crafted email through the affected device. A successful exploit could allow the attacker to bypass email filters on the affected device.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

BDU:2025-04923

CVE-2025-20153

Affected Products

Cisco Secure Email Gateway

References · 10

• https://bdu.fstec.ru/vul/2025-04923 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-mailpol-bypass-5nVcJZMw · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-20153 · Security Note
• https://osv.dev/vulnerability/CVE-2025-20153 · Vendor Advisory
• https://twitter.com/CVEnew/status/1892252348288029038 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1892302596045512766 · Twitter Post
• https://t.me/cvedetector/18464 · Telegram Post
• https://twitter.com/vuldb/status/1892265916077084978 · Twitter Post
• https://t.me/cveNotify/130378 · Telegram Post
• https://twitter.com/SystemTek_UK/status/1892820618615062815 · Twitter Post